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1. Which part of the address https://secure-login.mybank.example.account-check.test/start is the registered domain, the name the owner controls?

mybank.exampleaccount-check.testsecure-login.mybank.examplestart

2. What does this program print? ``

python
from urllib.parse import urlsplit
print(urlsplit('https://mybank.example@verify-now.test/login').hostname)

``

mybank.examplemybank.example@verify-now.testverify-now.testNone

3. What does this program print? ``

python
from urllib.parse import urlsplit

def host_of(url):
    return urlsplit(url).hostname

def safe_check(url, expected):
    host = host_of(url)
    if host is None:
        return False
    return host == expected or host.endswith('.' + expected)

print(safe_check('https://evilmybank.example/login', 'mybank.example'))

``

TrueFalseNoneAn error about endswith

4. A check is meant to accept only links to the bank, but it accepts a fake link. Here is the code. ``

python
def is_bank_link(url):
    return 'mybank.example' in url

`` What is the bug?

It looks for the bank's name anywhere in the address, so https://mybank.example.verify-now.test/login passesIt should use == instead of in, which only changes the type of the outputIt needs https:// at the start of the string before it can runIt should return None instead of False when the link is not the bank

5. A fake bank login page shows a padlock icon in the address bar. What does the padlock prove?

The site is the real bankThe password manager has checked the page and approved itThe page has passed a phishing scanThe connection is encrypted, but it does not show who runs the server

Phishing